The Noisy Brain

Stochastic Dynamics as a Principle of Brain Function

Edmund T. Rolls and Gustavo Deco

Unique in exploring brain 'noise' and showing that it is useful in decision-making, memory, perception, attention, and thought processes

Looks at the application of this acknowledge in helping us better understand clinical disorders such as OCD and schizophrenia, and also normal aging

The Noisy Brain

Stochastic Dynamics as a Principle of Brain Function

Edmund T. Rolls and Gustavo Deco

Description

The activity of neurons in the brain is noisy in that their firing times are random when they are firing at a given mean rate. This introduces a random or stochastic property into brain processing which we show in this book is fundamental to understanding many aspects of brain function, including probabilistic decision making, perception, memory recall, short-term memory, attention, and even creativity. In The Noisy Brain we show that in many of these processes, the noise caused by the random neuronal firing times is useful. However, this stochastic dynamics can be unstable or overstable, and we show that the stability of attractor networks in the brain in the face of noise may help to understand some important dysfunctions that occur in schizophrenia, normal aging, and obsessive-compulsive disorder.

The Noisy Brain provides a unifying computational approach to brain function that links synaptic and biophysical properties of neurons through the firing of single neurons to the properties of the noise in large connected networks of noisy neurons to the levels of functional neuroimaging and behaviour. The book describes integrate-and-fire neuronal attractor networks with noise, and complementary mean-field analyses using approaches from theoretical physics. The book shows how they can be used to understand neuronal, functional neuroimaging, and behavioural data on decision-making, perception, memory recall, short-term memory, attention, and brain dysfunctions that occur in schizophrenia, normal aging, and obsessive-compulsive disorder.

The Noisy Brain will be valuable for those in the fields of neuroscience, psychology, cognitive neuroscience, and biology from advanced undergraduate level upwards. It will also be of interest to those interested in neuroeconomics, animal behaviour, zoology, psychiatry, medicine, physics, and philosophy. The book has been written with modular chapters and sections, making it possible to select particular Chapters for course work. Advanced material on the physics of stochastic dynamics in the brain is contained in the Appendix.

Stochastic Dynamics as a Principle of Brain Function

Edmund T. Rolls and Gustavo Deco

Author Information

Gustavo Deco (born in 1961 in Argentina) is Research Professor from the Institució Catalana de Recerca i Estudis Avançats at the Pompeu Fabra University (UPF) where he is leading the Computational Neuroscience group at the Department of Technology and he is also director of the doctoral program in Computer Science and Digital Communication. His research interest includes computational neuroscience, neuropsycholgy, psycholinguistics, biological networks, statistical formulation of neural networks, and chaos theory. Edmund T. Rolls is a neuroscientist at The Oxford Centre for Computational Neuroscience, Oxford, and was Professor of Experimental Psychology at the University of Oxford, and a Fellow and Tutor of Corpus Christi College, Oxford. He performs research linking computational neuroscience approaches to neurophysiological, human functional neuroimaging and neuropsychological studies in order to provide a fundamental basis for understanding human brain function and its disorders.